Leather-burnishing mechanism



B. HALL. LEATHER BUBNIS'HING MECHANISM. APPUCATION FILED APR. 27,19l2. RENEWE'D SEPT. 29, I919.

L v m en. A mm nun m W & A 0 II I III kw h min/6686s Irv/ 12611701 7 60m Q. 5 BicitneZZHaZZ. W w 1 5;

HALL. LEATHER BURNISHING MECHANISM.

APPLICATION FILED APR. 21,1912- RENEWED SEPT. 29,1919.

Patented June 21, 1921.

2 SHEETS-SHEET 2-- 0 g I! knHf l A Q 3 I 4* q 0 m 0 o o i K v l E WtZIwQQe-Q Inventor fim a. BwZnv/eZZHaZZ.

UNITED STATES-PATENT OFFICE.

VBICKNELL' HALL, or 'zrAUN'roN, MASSACHUSETTS.

LEATHER-BURIIISHING MECHANISM.

Application filed April 27, 1912,'Seria1 No.'693,657. Renewed September 29,1919. Serial No. 327,269.

To all whomit may concern:

Be it known that I, BioKNnnnHAnL, a citizen of the United States, and a resident of'Iaunton', in the county of Bristol and State of Massachusetts, have invented an Improvement in Leather-Burnishing Mechanism, of which the following description, in connection with the accompanying drawings, is a specification, like characters onthe drawings representing like parts.

This invention relates to leather burnishing mechanism.

In order that the principle ofthe invention may be readily understood, I have discloseda single'embodiment thereof in the accompanying drawings, wherem- Figure 1 is a vertical, longitudinal sect on of leather burnishing mechanism embodying my invention;

Fig. 2 is detail in vertical longitudinal section of a portion of such mechanism;

Fig. 3 is a view partially in plan and partially in horizontal section of the mechanism shown in Fig. 1;

Fig. 4 is a transverse section upon the line 4- -4 01, Fig. 3;

Fig. 5 is an enlarged detail in' plan and horizontal section of a portion of the mechanism'shown in Fig. 3';

Fig. 6' represents one of the burnisherelements in transverse section;

Fig. 7 is a plan view and Fig. 8 a vertical, transverse section of a modified form of my invention; and

I Figs. 9 and 10 are views similar to Figs. 7 I and 8 respectively of still another form of my invention.

- An important object of my invention is so to prepare an edge or edges of leather for use in the manufacture of boots and shoes as .to obtain all the advantages as well as the appearance of a folded edge heretofore obtained by thinning one edge of the leather and-folding it on itself prior to subjecting the same to a burnishing action. 7

Inaccordance with my invention, I-preferably provide a plurality of burnishing elements, both of which, if but two are employed, are preferably heated, and both of which are preferably driven, said burnishing elements engaging'the same edgeof the leather. the first acting to round the edge thereof. In the eventthat a dressing is emloyed to soften the leather, the heat of' the first burnisber elcmentsets the dressing, so that the edge holds itsrounded' shape. The

, fast on said shaft.

succeeding b urnisher element preferably has Specification of Letters Patent. Patented J 21 1921 a to and fro movement relative to the work,

v.l'tteferring more particularly to the dr w-f ings, the bed plate is represented at 1, it being preferably of metal and supporting in underneath bearings 2, 3, a preferably horizontal'drive-shaft 4. driven in any suitable manner, as, for example, by means of a pulley 5 normally loose thereon but adapted to be clutched thereto in any suitable manner.

Herein for the purposeI have represented I the pulley 5 as having a recessed clutching face 6 to receive the frictional, conical clutching face 7 of a clutch member 8 splined upon a member fast on the shaft 4 as indicated at 9,}movable axially thereof and adapted to be projected into clutching manner. spring 10 tending constantly to force the clutch member 8 into clutching relation with the pulley 5, which is held from longitudinal movement along the shaft 4 by a collar 11 An arm or member 12- relation with the pulley 5 in any suitable Herein I have represented a coiled engages the peripheral groove 18' of said clutching member 8 and when projected to .theleft, viewing F igs. 1 andB, disengages the clutch member 8 from the pulley 5 against the tension of the spring 10. I I may shift theclutch operating arm or member 12 in any suitable manner, but'have herein represented'itas fast upon a slide rod 14 suitably mounted' in the frame work of the machine and having a rounded end 15 projecting into the path of a lever 16 pivoted at 17 upon bracket 18, shown as bolted to the bed plate. When the longer arm of the lever is moved downwardly, viewing Fig. 4,

the shorter arm thereof rides against the rounded end of the slide rod 14,"thereby axially projecting the same to the left viewing Fig. 3 and disengaging the clutch memher 8 from the pulley 5. Upon opposite movement of the lever 16, the coiled spring 10 again projects the clutch member 8' into. clutching relation with the pulley 5. It will be understood, however, that any suitable clutching or other means may be employed for thispurpose. i

I preferably provide two burnishing members, one at least and preferably both of which are heated. In the present embodiment of-the invention, I have represented a rotary burnisher electrically heated and a cooperating burnisher preferably similarly.

heated and-having a to and fro and referably a reciprocatory movement; Pre erably these burnishing elements are so constructed as to be readily applied to and removed from the operating parts ofthe mechanism.

The bed plate 1 isprovided with an open ing1 9, over which, upon a surrounding "shoulder 20, is supported and secured awork guiding plate 21 v ofsome suitable insulating material for heat and electricity. Depending from and secured to said plateby means.

7 of screws 22 is a block 23 having therein a bearing for a vertical shaft 24 provided at its lower endwith a beveled gear 25 meshing withand driven by a similar gear 26 upon the driveshaft 4. The upper end of the a shaft 24 is preferably of reduced diameter.

reception of the wheel 28 so that the groove,

29;.of the latter may-extend to the face of" 30 the plate 21, thus permitting the work to as indicated at 27, and thereonto is fitted cap-wise a burnishing wheel. 28 preferably formed of some metal adapted to be readily heated by the application of an electriclcurrent. 7 The wheel 28 is provided with a grooved periphery 29 to receive the edge of the leather to be burnished, and as herein shown, the face of the plate 21, is recessed or countersunk as indicated at 28 for the be readily guided by the plate to said roove.

Preferably said wheel 28 is adapte to be readily applied to and removed from the shaft 24,- so that other burnishing wheels may be substituted therefor. To this end, I

have hereinfrepresented the upper end, of

the shaft 24 astransversely slotted or socketed as indicated at 30, and the said wheel isprovided with a transverse pin 31 adapted to be seated in said slot or socket, thereby rendering said wheel fast upon the shaft 24'.

Preferably the wheel 28 does not directly contact with the shaft 24, there being interposed athimble or lining 32 ofinsulating material for heat and electricity.

In practice, but a negligible amount at least of current or of heat wouldbe conducted by the cross pin 31 or by the pins 43.v Furthermore, such pins might readily be made of insulating material for heat and electricity. In order to heat the burnishing wheel28, I mayemploy any suitable device. erably, however, the said burnishing wheel is electrically heated, and to that end I have represented a heatingcoil 33 connected to any suitablesource of electricity and having in'its lower end a recess or socket 34 into which the projecting axial end of the wheel 28 is received as'indi'cated in Figs. 1 and 2. In order to permit the accurate positioning of the burnishing wheel with respect to the heating coil, the latter-is preferably longitudinally and herein vertically adjustable.

'While any suitable means maybe employed for thislpurpose,I have in Fig. '1 repre-,

Prefsented the said coil as providedwith' an 38 from the socket 40, the entire heating de-- vice is readily separated from the burnishing mechanism.

-- In connection withthe burnishing wheel 28, I preferably provide a cooperating burnisher element, here represented as a metallic plate 41, shown most clearly in Figs. 5 and 6, andh'aving a grooved edge 42 arranged in'parallelism with the peripheral groove 29 of the wheel 28.

so as to be effectively heated therebyrand is preferably readily removable from its support and has imparted thereto a'to and fro movement and preferably a'movement of reciprocation so as to act with a rubbing or finishing action upon-the leather edge. To

Thesaid plate substantially underlies the heating'coil 33 thisend, the saidyplate4l.isprovided with two pins 43Ior'other si itable securing means,

shown most clearly in Fig. 2 as depending into a block 44 supported within a recessed portion of the block 23 and having an elongated centralaperture for the passage of the shaft 24, and permitting a to and fro movement of said block transversely of the axis ofsaid shaft. The saidblock 44'is itself recessed for the reception of an eccentric v 'bloclr45, which is in turn also recessed for the reception ofran eccentric 46 fast upon as the shaft 24. The insole plate 21-is slotted as indicated at 47 to permit the described reciprocatory movement of the burnisher plate 41. The construction of parts is such that upon the rotation of the shaft 24 the burnishing wheel 28 iscontinuously rotated in one direction and the 'burnisher plate 41 is reciprocated by the eccentric .46 through the intermediary of the'blocks .44 and 45. Current being applied to the coil 33, bothof the burnishing elements are highly heated.

The grooves of thetwo-burnishing ele- I ments are so located with respect to the face of the bed plate 1 that the leather or otherworkmay he slid or guided flatwise' along said face directly into the grooves ofthe burnishing elements without necessitating the lifting of the work from the face of thebed plate. I-Ieretofore so far as I am aware, it has been necessary, in order to impart a rounded edge'to leather, to

7 thin the edgeand then fold it longitudinally upon itself and thereupon to subjectsaid "folded edge to the action of a-burnishing element. My invention obviates the necessity of thinning, and then folding the edge to be-rounded, as I am enabledby the cooperative action of the two burnishing elements, first to impart a rounded edge to the leather by the grooved face of the burnishing wheel 28 and then to set or preserve such rounded edge by the rubbing or finishing action of the plate .41. Prefen, ably I apply a dressing to the edge of the leather to soften the same, and the heated burnishing wheel 28 actsto set the dressing which assists in preserving the rounded shape imparted to the leather edge by the groove of the burnishing wheel 2-8. The to and fro or rubbing action of the grooved plate 41 completes the operation and effects the preservation of the said rounded shape of the leather edge.

It will'be evident that by lifting the tube or guide 38 from the socket i(),'the burnishing wheel 28'may be readily removed from the shaft 24: and the burnishing plate 41 may be lifted from its operative position, thus withdrawing the pins 43 from the block li.

In that form of theinvention shown in tated and the latter being reciprocated. Vvithin the scope of my invention, I may employ a single burn1shing member, and, if

desired impart'thereto a compound move-.

ment, such, for example, as a rotary or oscillatory movement about an axis and .a to and fro or other suitable bodily movement. V

In'Figs. 7 and '8, I have represented a burnishing wheel 48 mounted upon a shaft 49 similar, it may be, in all respects to theshaft 24 shown in Fig. 1 and similarly driven. The block 50 is preferablysimilar tothe block 23 and is provided with a bearing for said shaft 49. Upon the shaft 429 is an eccentric 51' and" surrounding the latter is a block or eccentric strap 52; About the block or strap 52 is shown a recessed block 5354 having portions thereof above and below said eccentric 51 and block'52, as indicated in Fig. 7. The upper portion of the block 53 54; is provided with an upstanding bear-- ing 55 receiving therein the stem or projection56 of the burnishingiwheel 48, which latter is provided upon a portion at least of its periphery with teeth 5'7 meshing with a'rack 58 fixed upon the adjacent part of the frame. V

The construction of parts is such that upon rotation of the shaft' lS, the eccentric 51' imparts to and fro movement to the block 52 and the latter impart-s to and fro movementto the blocks 53, 5 thereby reciproeating the latter in the direction of feed of the work. v The bearing 55 of the block 53,

' 54, ismountedin an elongated slot 59 Of'theplate 21, so that not only is the burnishing wheel 18 vibrated or moved bodily to and fro along the path of the work, but in such vibration or bodily movement engagement of the teeth 57 with the rack 58 compels an oscillation or a turning or rolling movement of the said burnishing wheel 48. Thus the said wheel d8 is not only reciprocated or vibrated at a rapid rate along the path of the work, but its oscillatory or rolling move- 'ment gives substantially the same effect to the work as the continuous rotary movement of the burnishing wheel 28. In this form of the invention the 'burnishing wheel 48 combines the functions of the burnishing wheel 28 and the burnishing plate 41 of that form of the invention shown in Figs. 1 to 6 inclusive.

so I

In connection with that,

form ofthe invention shown in Figs. 7 and teriorly recessed sufliciently to permit the to'and fro motion of the wheel 48 or any other suitable construction being employed for the purpose.

In F igs..9 and 10, I have shown still another form of my invention, the parts being substantially similar to those represented in Figs. 7 and 8, excepting that'the burnishing wheel 60 is provided with an upward prolonga-tion gr ooved at 61 for the reception of a driving belt 62' connected with and driven from any suitable part of the mechanism. The belt '62 being continuously driven in one direction imparts continuous rotary movement to the burnishing wheel 60 and through the shaft 49 the said wheel isreciprocated or vibrated toand fro along the path of the work.

in Figs. 1 to 6 inclusive it beingunderstood that I may provide suitable'heating,

means, preferably that shown in Figs. l to j 6 inclusive.

1. Leather burnishing mechanism compris- V 7 mg, in combination, a work'guidmg plate,"

'a burnishing wheel, means for supporting said wheel1adja'cen't said plate and in such position that the'work will be guided by the plate to the periphery of the wheel, means for rotating the wheel, and electrical means for heating the wheel. 7

2. Leather burnishing mechanism compris ing in combination a burnisher wheel posian electricalh heated coil into which said J p projection extends.v

4. Leather burnishing mechanism compris ing, inocoinbination, an upright shaft, rotatmg means therefor, a cap-like burnisher 7 wheel fitted onto the upper end thereof and T heating :means applied to the crownportion of said wheel. p I

5. Leather burnishing mechanism comprising, in combination, an upright shaft, rotating means therefor, a cap-like burnisher wheel fitted onto the upper end thereof, in sulating means between the wheel andshaft,

and electric heating means for said burnisher 6. Leather burnish'ng mechanism comprising, in combination, a bed'plate, an insulatingplate thereon, a vertical shaft supported by said insulating plate, a cap-like burnisher wheel upon said shaft, insulation between said shaft and wheel, and electric heating means for the latter.v

7. Leather burnish'ing mechanism comprising in combination, a shaft, a burnisher thereon, electric heating means for said burnisher in axial alinement with said shaft,

and means for relatively axially adjusting said shaftand heating means. 8.-Leather burnishing mechanism comprising, in combination, a shaft, a burnisher thereonhaving a heat-receiving projection, an electric coil appliedto said projection,-

and means for adjusting-said coil axially of the shaft.

, 9 .-.Leather ing, in combination, a plurality of burnishing elements, means differentially to impart burnishing movement to said elementsand means for electrically; heating one at least of said elements;

10. Leather burnis'hing mechanism coin prising, in combination, two cooperating burnishers, means for rotating one of said" burnishers and means for imparting to-andfro motion only to the other therebyto impart differential movement to said burnishersr r -11, Leather .burnishing mechanism comprising, in combination, a shaft, arotary burnisher thereon, means for heating the same, a reciprocatory burnisher, and means for operating the same from said shaft.

.12 Leather burnishing mechanism" comburnishing mechanism compris prising, in combination, a shaft, a rotary bu'rn sher'and an eccentric on said. shaft,

. heating means for. said rotary burnisher, a reciprocatory burnisher, and'operatmg conneetions between the same and said eccentric, .13. Leather burn shing mechanism comprising, in combination, a bed plate, a bearblock and shaft supported thereby, a burnisher wheel upon said shaft, an eccentrio upon said shaft within sald'bearmg block, a burnisher slide, and operating connections between said slide and eccentric.

p sing, in combination, a shaft, a burnisher slide, an eccentric upon said shaft, operating connections between the eccentric and slide,

and a cooperating rotary burnisher. 7 15. Leather burnishing mechanism comprising, in combination, a shaft, an eccentric thereon, a plurality of nestedblocks about said eccentric and a burnisher slide connected to the outermost, of said blocks and positioned with its active face in substantialparallelisinwith said shaft. v s 16. Leather burnishing mechanism. comprising, in combination, a supporting plate, a vertical shaft projecting,therethrough, a burnisher plate having atoeand-fro motion upon the face of said plate, and operating connections between said shaft and burnisher plate.

Leather burnishing mechanism comljl. Leather burnishing mechanism comprising, in combination, a supporting. plate,-

a vertical shaft projecting therethrough, a

burnisher plate having a sliding movement upon the face of said plate, an eccentric upon said between said eccentricand burnisher plate.

Leather burnishing mechanism compr? ,ng, in combination, asupporting plate, a vertical shaft PXOJQCtlIlg therethrough, an eccentric thereon, an eccentric block, ajburnisher plate-having asl-iding movement upon the face'of said plate andreadily detachable connections between said block and said burnisher plate. 7 1 19, Leather bUl'IHSlHIIg mechanism com-,

prising, in combination, a supporting-plate,

shaft, and operating connections,

its

an upright-shaft, a burnisher wheel upon 7 readL-y removable-from said shaft, a burnisher plate having a tosand-fro niovement upon theface of said plate, an eccentric 'upon said shaft and readily detachable,

and drivin connections between said buruisher plate and eccentric. 1 V p 20. Leather burnishing 'meohanism com prising, in oombinatioma plate constituting a work support, an uprightshaft projecting through said support, a burnisher wheel uponsaid shaft and having a work receiv-: ing' groove extending to theface of the plate, and heating means for said wheel,

'21. Leather burnishing mechanism com prising in combination, afplate constituting a work support, an upright shaft projecting through said support, a burnisher wheel thereon, a burnisher plate, and operative connections between said shaft and plate to impart to and fro movements to the latter,

said Wheel and plate having =burnishing grooves extending to the face of the plate.

22. Leather burnishing mechanism com prising in combination a plurality of burnishers in substantial alinement to engage the same work edge, means to impart differential movements to said burnishers and means to heat one at least of said burnishers.

23. Leather burnishing mechanism'comprising in combination two burnishers in.

substantial alinement. to operate upon-the same work edge, means toimpart differential movements to said burnishers and means electrically to heat both of said burnishers.

24:. Leather burnishing mechanism comprising in combination, a wheel having a grooved face to engage an edge of the work, means to rotate said wheel, a plate in substantial alinement therewith and having a grooved face to engage said edge of the work, means to impart to and fro movement to said plate, and means to heat one of said members."

25. Leather burnishing mechanism comprising in combination a grooved heel and a grooved plate in substantial alinement to. engage the same work edge, means to rotate said wheel, means to impart to and fro movement to said plate, and electrical means to heat both of said members.

26. Leather burnishing mechanism com prising in combination a work guiding plate, a burnisher wheel having one face en.- gaging said plate whereby the I work is guided to said wheel, means for rotating the wheel, and electrical means for heating the same.

27. Leather burnishing mechanism comprising in combination an upright shaft, rotating means therefor, a cap-like burnishe'r wheel fitted on to the upper'end thereof, and electrical means applied to the crown portion of said wheel for heating said wheel,

28. Leather burnishing mechanism com prising in combination two cooperative burnishers, means to rotate one of them, and means to reciprocate the other in the plane of such rotation.

29. Leather burnishing mechanism comprising in combination, a shaft, a rotary burnisher mounted thereon, an eccentric upon said shaft, a plurality of nested blocks about said eccentric, and a burnisher slide connected to the outermost of said blocks.

30. Leather burnishing mechanism comprising in combination, a shaft, an eccentric thereon, a plurality of nested blocks about said eccentric, a burnisher slide connected to the outermost of said blocks, and heating means overlying said burnisher.

31. Leather burnishing mechanism comprising in combination, a burnisher wheel, rotating means therefor, and electrical heating means for said wheel constructed and arranged to inclose a portion thereof.

32. Leather burnishing mechanism comwheel, and means for electrically heating the same. i

35. Leather burnishing mechanism comprising 1n' combination, an upright burnisher wheel having a free space about the periphery thereof permitting the edge of a piece of leather to be brought into burnishing relation thereto, means for rotating said wheel, means for electrically heating said wheel, and guiding means for presenting the said leather edge to said burnishing wheel.

In testimony whereof, I-have signed my name to this specificatlon, 1n the presence of two subscrlblng witnesses.

BIoKNnLL HALL. I

Witnesses:

ROBERT H. KAMMLER, ARTHUR E. CARSON.

.85 ing relation thereto, means for rotating said 

